Gorham police Lt. Chris Sanborn was in charge of the effort to bring the standoff to a peaceful conclusion, said USM spokeswoman Judie O’Malley.

The incident was reported about 8 p.m., according to Robert Caswell, executive director of public affairs at USM. Caswell said a USM police dispatcher confirmed that a university student who is a member of the Sigma Nu fraternity was armed with a loaded handgun and had barricaded himself in a room in the off-campus fraternity’s house in downtown Gorham.

In an update issued at 9:30 p.m., O’Malley said that all other Sigma Nu brothers and two guests were out of the house and that the brother who locked himself in his room with the firearm had been belligerent to his fraternity brothers before the incident. No injuries were reported.